易燃厚煤层采用分层开采时,自然发火几率一般较高,防治自然发火是安全生产的重要课题。对发火地点的分析和判断是防灭火工作的关键环节。通过大量的现场统计资料已知,分层工作面进风和回风顺槽以及停采线(简称“两道一线”)为易燃发火地点,但是对其具体的部位仍需根据丢煤和漏 When the flammable thick seam is stratified mining, the probability of spontaneous combustion is generally high, and preventing and controlling spontaneous combustion is an important issue of safety production. Analysis and judgment of the place of ignition is a key link in fire prevention and control work. According to a large number of on-site statistics, it is known that the stratified working face inlet and return air passages and the stop-working line (“two lines and one line”) are flammable and explosive sites. However, leak